Krakatoa [Indonesia] Volcano Alert Status
[google translated]
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"On October 2, 2011, at 00.00 until 12.00, there are 2745 recorded seismicity."
SUNDAY, OCTOBER 2, 2011, 13:44 GMT Elin Yunita Kristanti
VIVAnews - Mount Anak Krakatau has raised the status of a "standby" or level IV. The Center for Volcanology and Geological Hazard Mitigation (PVMBG), Surono said a rise in status is set on Friday, September 30, 2011 evening at 24.00. The reason is the elevated status because of the high-intensity earthquake. Today, for example. "On October 2, 2011, at 00.00 until 12.00, there are 2745 recorded seismicity," said Surono, when contacted VIVAnews.com , Sunday, October 2, 2011. quake Mount Anak Krakatau, Surono added, and even felt up to the island of Anak Krakatau. "So often, streak continues. Although the earthquake was too small, 2 on the Richter scale, even under an SR, but because it feels so constantly," he added...
Surono mention, there are currently six volcanoes in Indonesia a standby status, ie Son of Krakatoa, Lokon, Karangetang, Papandayan, Tambora, and Children Ranakah , The status of "alert" is 16.
Explosive eruptions and information on SakuraJima volcano, Japan + video’s
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October 3, 2011 By Armand Vervaeck
The webcam videos below are from October 1 and October 3, 2011. They show a couple of explosive eruptions.
Volcano on Alaska's remote Aleutians oozes lava
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DAN JOLING,Associated Press September 26, 2011
A volcano in Alaska's remote Aleutian Islands has begun oozing lava, a signal that the mountain could explode and send up an ash cloud that could threaten aircraft.
Satellite images show lava is building in the crater at the summit of 5,675-foot Cleveland Mountain on an uninhabited island about 940 miles southwest of Anchorage, according to the Alaska Volcano Observatory.
"It's forming a dome-shaped accumulation in the crater," said Chris Waythomas of the U.S. Geological Survey, the observatory's acting scientist in charge. "We call these things 'lava domes.' It looks like a muffin top."
Lava domes form a lid on a volcano's "plumbing," including the chamber holding the magma. When they grow big enough, lava domes become unstable and will sometimes collapse, decompressing the magma chamber and leading to an explosion, Waythomas said.
"They can seal up the conduit and prevent gasses from escaping and lead to an explosive event," he said...
Cleveland Volcano's last major eruption was in 2001. It has had bursts of activity nearly every year since then, Waythomas said.
The lava dome now measures 540 feet in diameter, up from 490 feet Sept. 9. Waythomas said a satellite image indicated the lava dome was about 65 feet below the low point on the crater rim.
"The crater is starting to fill up," he said. "This could take another week or two and it will be there. And then we're not sure what will happen."
The lava flow may stop, or lava could spill over and descend the mountain's flank.
"It may not do anything explosive. It may just ooze over," Waythomas said. "Or it could cause the dome itself to collapse just because it becomes unstable at that point. It's on a steep slope and there's nothing holding it up there."..
In announcements about Cleveland Volcano, the observatory warns that it does not have a real-time seismic network on the remote volcano and cannot track its earthquake activity, forecast imminent eruptions or even confirm explosive, ash-producing events.
Canary Islands after earthquake triggers volacano fears
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From: AFP September 29, 2011 5:00AM
POLICE have moved residents and tourists from houses at the foot of a volcano on Spain's Canary Islands after a growing series of earthquakes raised fears of an eruption.
With the Pico de Malpaso mountain spitting rocks intermittently and a growing rumbling underground, authorities made emergency preparations in case the volcano blows its top on the Atlantic island of El Hierro.
"I have never felt shaking like it," said Herminio Barrera, 25, a mechanic in the town of La Frontera.
"I notice it especially at night. We can also hear a rumbling and sounds from deep down."
A municipal official who asked not to be named told AFP that 53 residents and tourists had been evacuated to protect them from the occasional flying volcanic rock and the defence ministry said it was preparing emergency shelter for 2,000 people.
"I am staying calm but there are people who are more worried, particularly those with children," Barrera told AFP.
"We are very close to the mountain. My father-in-law left yesterday."
The Canary Islands regional government said it was in a state of pre-alert and was stocking drinking water and medical supplies, but officials played down any risk of a disaster.
"We will not have to evacuate the island," population 11,000, said the head of the island's local council, Alpidio Armas. "The number of tremors has increased, but most of them are in the sea."
The municipal official said the authorities did not expect an "imminent eruption" and the island's official risk alert for the 1,500-metre peak remained on yellow, or intermediate.
The national defence ministry said it had sent 31 military personnel to the island to help with the evacuation and Defence Minister Carme Chacon was heading there to inspect the emergency preparations.
The Spanish National Geographic Institute has recorded 8,000 tremors since July 19, most of them too small to be felt, but they have been growing in intensity. One recorded overnight on Wednesday reached 3.4 magnitude.
"We have not seen this kind of movement with such frequency on El Hierro since records began" more than a century ago, said a spokeswoman for the Canary Islands government, Ana Vidal.
The last volcanic eruption on the Canary Islands was on nearby La Palma in 1971, she said.
Katla Rattles Again, New Flood in Múlakvísl?
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03.10.2011 | 13:00 IcelandReview
A driver who passed across the river Múlakvísl in south Iceland late last night said it is likely that the river flooded. Sulfur could be smelt long before he reached the river, he said.
Múlakvísl is a glacial river which originates in Mýrdalsjökull, underneath which the volcano Katla lies. A minor eruption is believed to have caused a glacial outburst in Múlakvísl in July, which destroyed the bridge and tore a hole in the Ring Road.
Since then, minor earthquakes in the volcano have regularly been reported; on Sunday morning sensors picked up two small tremors in the Katla caldera measuring less than two points on the Richter scale, ruv.is reports.
Volcanologist Evgenia Ilyinskaya said the earthquakes were so small that there is no reason to be concerned.
In response to news of a possible new flood in Múlakvísl, the Icelandic Meteorological Office told ruv.is that sensors don’t show anything unusual but the water level in the river has been high lately due to heavy rain.
The sulfur smell, which has repeatedly been reported in the past months, is said to be caused by geothermal heat underneath the glacier.
Nabro volcano (Eritrea/Ethiopia) : evidence of ongoing activity (satellite pictures)
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October 3, 2011
Nabro is an Eritrean volcano with NO historic eruption record. Earthquake-Report.com was one of the first publishers in the world detecting and describing this unexpected eruption. Our very extensive reports were also the work of our many readers who gave a lot of input.
Satellite imagery suggests that the eruption of Nabro Volcano, which began in June 2011, continues. The volcano is located on the edge of the Danakil Desert, a remote and sparsely populated area on the border between Eritrea and Ethiopia, and few eyewitness accounts of the eruption are available.
Geologists Map Birth Of New Ocean
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02 Oct 2011 (NewsCore)
A giant underground reservoir of molten rock has been discovered under the deserts of Ethiopia by British geologists, The (London) Sunday Times reported.
They targeted the Afar region in the Horn of Africa after a recent surge in volcanic activity and earthquakes plus the appearance of giant cracks in the rocky surface. Tectonic plates in the area are pulling apart and gradually creating a new ocean.
Now, the scientists have mapped the colossal underground lake of magma that lies up to 20 miles (32km) below the earth's surface.
"We estimate that there is 3,000 cubic kilometers of molten rock under Afar -- enough to cover all of London ... with around a kilometer of rock," said Kathy Whaler, professor of geophysics at Edinburgh University.
The reservoir is under such pressure that it has forced tongues of molten rock up towards the surface, producing eruptions and earthquakes.
